with the driver's vision as aforesaid. Efficient means must
be adopted to prevent interference with the driver's vision
through the front wind-screen by rain or the rays of the sun
or otherwise howsoever.

(4) A mirror or mirrors shall be provided so that the driver
may have a view of the interior of the omnibus, and so also
that he may observe traffic on the right and rear of the omnibus.

Liquid Fuel.

9. (1) Not more than forty-six Imperial gallons of liquid
   fuel shall be carried on any one omnibus at one time, save
   with the consent of the Inspecting Engineer, to be given only
   in special circumstances and for temporary purposes. No
   liquid fuel shall be carried otherwise than in the permanent
   carrying-tanks.

(2) The said tanks shall be properly constructed of durable
material and shall be of ample strength for the purpose which
they serve. They shall be so placed that any overflow shall
not fall upon woodwork or be allowed to accumulate on the
omnibus, and the filling inlet for the fuel must be brought
without a joint to the outside of the body of the omnibus,
and be placed as far as convenient, from a constructional
point of view, from any doorway or exhaust piping, being
not less in any case than 2 ft. therefrom.

(3) An aperture for the purpose of ascertaining the quantity
of liquid fuel may be provided in that portion of the tank
which is within the body of the omnibus. Such aperture
shall be fitted with a securely screwed-in bushing, with a hole
not exceeding 1 in. in diameter in the middle thereof, through
which a metal depth rod shall pass. Such rod shall be per-
manently and rigidly attached at its upper end to a metal
screw-on cap which itself shall properly and securely close
the said aperture, except for any necessary air vent, while at
the lower end of the rod there shall be provided a permanent
stopper which will not pass through the said hole in the bush-
ing, but will pass the tank aperture when the bushing is re-
moved therefrom. The bushing shall not be removed save
with the express approval of the Inspecting Engineer. The
said aperture must be so situated that it will at all times, when
the motor-omnibus is in use, be at a higher level than the
filling-inlet.

(4) The filling-inlet must be provided with a cap, which
shall be tightly fitted in position immediately after the fuel
has been supplied to the tank.

(5) At the junction of each liquid-fuel supply-pipe and the
tank there shall be a shut-off cock, readily accessible to the
driver, for the purpose of turning off the supply of fuel from
the tank.

(6) No liquid fuel shall be supplied to the omnibus while
the engine is running.

Brakes.

10. (1) Every omnibus shall be fitted with at least two
    efficient independent brakes, one at least of which shall be
    operated by a pedal, and each shall be capable of stopping the
    omnibus from progressing in a forward or rearward direction
    under all conditions of its service. For the purposes of this
    clause brakes shall not be deemed to be independent if
    operated by the same connections or levers, or if they act
    upon the same brake-drums.

(2) Any brake which simultaneously applies the braking-
pressure on two wheels or drums with a common axis shall be
so designed or fitted with a compensating device that the
braking effect is approximately the same on each road wheel.
At least one brake exerting braking-pressure directly upon
one pair of road-wheels (one on the off and the other on the
near side) shall be fitted to each omnibus.

(3) For the purpose of testing the brakes the omnibus shall
be presented either loaded or unloaded, as may be required
by the Inspecting Engineer.

Alterations in Omnibus or Route.

11. (1) If the owner of an omnibus which is restricted by
    the Inspecting Engineer's report to specific routes desires to
    carry passengers in that omnibus over any route different in
    whole or in part from the said routes, the written approval of
    the Inspecting Engineer shall first be obtained.

(2) No alteration shall be made in the design or construc-
tion of the omnibus otherwise than for fair maintenance
requirements, nor shall any bulky equipment or fittings be
added without the prior written approval of the Inspecting
Engineer. Any such alterations or any substantial replace-
ments shall comply so far as is considered reasonable by the
Inspecting Engineer with any relative requirements of these
regulations, whether contained in Part I or in Part II hereof.

(3) On the presentation to the Inspecting Engineer of a
motor-omnibus for inspection, a certificate signed by the
owner shall be given with respect to any alterations made or
proposed to be made in the route since the last inspection,
and also with respect to any alterations in the brake mechanism
or gear ratio (including particulars as to the size and nature
of tires) and in the general condition or structure of the
omnibus. If no such alterations have been made, a certifi-
cate to that effect shall be given.

Fire-extinguishers.

12. (1) Every omnibus shall be provided with at least two
    suitable appliances for extinguishing fire. Such appliances
    must be either of the tetra-chloride type or some other type
    approved by the Fire Underwriters' Association as suitable
    for motor-vehicle service, and must at all times be effectively
    maintained, and must be carried one near the front doorway,
    placed so as to be readily accessible from both inside and out-
    side of the vehicle, and one in a readily accessible position at
    the rear end of and inside the omnibus.

(2) The fire-extinguishers must not be allowed to incon-
venience passengers, either by reason of their condition or
position.

Signals.

13. There shall be available for every four passengers from
    each seat a ready and suitable means of signalling to the driver
    and to the conductor (if any).

Reflector.

14. A suitable red reflector shall be fitted to every omnibus
    in the proximity of the rear light as an extra protection in
    the event of the failure of the said rear light.

Fume, &c., Protection.

15. The omnibus must be so constructed and maintained
    that smells or fumes from the exhaust-pipe or other sources,
    or the heat from the motor, exhaust-pipe, or generator shall
    not injuriously affect any part of the omnibus, or injuriously
    affect or interfere with the comfort of the passengers or driver.

Destination Sign.

16. On the front of the omnibus, not lower than 4 ft.
    from the ground, and above the driver's normal line of vision,
    words to indicate for every single journey the destination and
    also, at a reasonable height on both sides thereof, the desti-
    nation and general route of the omnibus shall at all times be
    kept so as to be clearly visible to persons of normal sight at
    a distance of seventy-five yards. At all times while the omni-
    bus is by law required to be lighted a front indicator containing
    the information aforesaid shall be clearly illuminated.

Tires.

17. Each tire of an omnibus shall be made of soft or elastic
    material such as rubber, and must be of good quality through-
    out, and shall always be maintained in a safe and satisfactory
    condition and with the view of minimizing vibration.

Electric Wires.

18. Wires conducting electric current must be properly
    insulated, and be protected from injury, and shall be so placed
    as to minimize the risk of danger from short-circuits or other
    causes.

Oil Protection.

19. The exhaust-pipe must not be placed where oil or any
    inflammable or vaporizable material is likely to be dropped
    upon it. The dropping of grease and oil upon the roadway
    shall be reduced to a minimum.

Accumulation of Benzine, &c.

20. When a guard, tray, or undershield is fixed beneath
    the engine, carburetter, or fuel-tank it must be so constructed
    that any overflow of liquid-fuel is not retained thereon.

Steering.

21. Steering-gear and all connections thereof must be of
    ample strength, and their design and leverage must be such
    as to give convenient and sensitive control.

Protection of other Traffic.

22. Every omnibus shall be so constructed that it is able
    to turn any corner on its route without the need for using
    the reverse gear, and without unduly interfering with other
    traffic.

Protection from Vibration.

23. All brake and steering connections and all parts con-
    nected by bolts or by studs and nuts which are subject to
    severe vibration must be fastened by lock-nuts, castellated
    nuts with pins, or by nuts with approved spring washers or
    lock-nut washers.